# Study finds hot days may gain 4 extra hours of extreme heat by 2100 2026-08-12T04:24:27+00:00 | World & Diplomacy | Indian Opinion Desk Corroboration: 1 independent outlet A study published in Nature Climate Change projects that a hot day by 2100 could have an extra four hours of extreme heat if high emissions continue. Researchers from Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory analysed global hourly data from 1981-2023 and future projections. They found that non-hot days could gain three additional hot hours. Low and middle-income countries will be worst hit, accounting for over three-quarters of current and projected heat exposure. More than 80% of land areas saw an increase of 62 extra heat hours per decade since 1981. The authors said hourly assessments capture heat missed by daily metrics, aiding health planning. ## Coverage - thehindu.com Tags: climate change, emissions scenario, heat extremes, hourly heat, Nature Climate Change, public health Canonical: https://indianopinion.org/study-finds-hot-days-may-gain-4-extra-hours-of-extreme-heat-by-2100/ License: Summary and commentary (c) Indian Opinion, reusable with attribution. Facts belong to the linked sources. Cite: https://indianopinion.org/study-finds-hot-days-may-gain-4-extra-hours-of-extreme-heat-by-2100/#story-in-brief Review state: restored archive article, accurate at time of publication, not offered to search indexes.